描述 Description

GENERAL DESCRIPTION
The MSM7524 is the single chip DTMF transceiver –generator/receiver– with the call progress
tone generator/detector and the special tone –1300 Hz in the first version, possible to be
modified–detector.
Each function block can be controlled by an external MCU via 4-bit processor interface.
The chip operates with +5 V single supply with low power consumption, and is suitable for the telephone terminal equipment.FEATURES
? Power supply voltage : +5 V ±10%
? Low power consumption
? Operating mode : 8 mA Typ.
? Power down mode : 10 mA Typ.
? 4-bit processor interface
? Dynamic range of DTMF receiver : 40 dB
? Low signal distortion output from DTMF generator
? Call progress tone detector : 330 to 640 Hz
? Call progress tone generator : 350/400/440/480 Hz
? Special tone detector: 1300 Hz ±20 Hz (for FAX)
? 3.58 MHz crystal oscillator circuit on chip
? Package :
? 32-pin plastic SSOP (SSOP32-P-430-1.00–K) (Product name : MSM7524GS-K)

特性 Features

? Power supply voltage : +5 V ±10%
? Low power consumption
? Operating mode : 8 mA Typ.
? Power down mode : 10 mA Typ.
? 4-bit processor interface
? Dynamic range of DTMF receiver : 40 dB
? Low signal distortion output from DTMF generator
? Call progress tone detector : 330 to 640 Hz
? Call progress tone generator : 350/400/440/480 Hz
? Special tone detector: 1300 Hz ±20 Hz (for FAX)
? 3.58 MHz crystal oscillator circuit on chip
? Package :
? 32-pin plastic SSOP (SSOP32-P-430-1.00–K) (Product name : MSM7524GS-K)